Features & Applications:

The M40 Oxygen, Carbon Monoxide, Hydrogen Sulfide, and Combustible Gas Monitor is ideal for personal monitoring and delivers high performance and reliability in harsh environments. The rugged, impact resistant housing also provides resistance to radio-frequency and electromagnetic interference. The four-button interface provides simple, intuitive operation and calibration, and its five-second "off" feature prevents unintentional shut-offs.

Note: Sold in continental US only.

Features:

• 1 to 4 gas monitoring for Oxygen (O2), Hydrogen Sulfide H2S), Carbon Monoxide (CO) & combustible gases (LEL)
• Calibrated to NIST standards
• 18-hour runtime with lithium-ion battery
• Includes vibrating, 90dB audible, and LED visual alarms

Spec Summary:

DIMENSIONS:	4.30"h x 2.45"w x 1.37"d (10.9cm x 6.22cm x 3.48cm)
WEIGHT:	8.6 ounces (244 g) Weight with pump: 11.6 ounces (326 g)
SENSORS:	The M40 is available in a 2, 3, or 4-gas configuration including oxygen (O2), hydrogen sulfide (H2S), carbon monoxide (CO), and combustibles (LEL) /hydrocarbons
MEASURING RANGES:	CO range: 0-999 ppm in 1 ppm increments H2S range: 0-500 ppm in 1 ppm increments O2 range: 0-30% volume in 0.1% increments Combustibles: 0-100% LEL in 0.1% increments The M40 features LEL over-range protection
POWER SOURCE:	Lithium-ion battery (can be charged in instrument)
RUNTIME:	18 hour - instrument (non-alarm) 12 hour - instrument with pump (non-alarm)
DISPLAY:	Large LCD provides simultaneous and continuous readout of up to all four gases. Large, high-contrast characters, graphic icons and unique amber backlight provide clear display visibility in low-light conditions.
ALARMS:	Vibrating, 90 dB audible and ultra-bright LED visual alarms. High/low, STEL, TWA, and low battery alarms. Flow alarm indicator when used with optional SP40 pump.
DATALOGGING:	Up to 50 hours of datalogging capability
TEMPERATURE RANGE:	-4º to 122ºF (-20º to 50ºC)
HUMIDITY RANGE:	15 to 95% RH, typical, 0 to 99% RH intermittent (non-condensing)
APPROVALS:	UL approved - Class I, Group A, B, C, D CSA (pending) - Class I, Group A, B, C, D Cenelec (ATEX) and Australia - EEx ia IIc T4 (pending)

Note: Industrial Scientific products can only be sold in North America only.